/*
 * Copyright (c) 2011 Ondrej Lapacek
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you
 * may not use this file except in compliance with the License. You may
 * obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * permissions and limitations under the License.
 */

/**
 * @author      Ondrej Lapacek
 * @version     1.0, 09/12/11
 * @since       1.0
 */

package cz.muni.fi.android.assistivecamera.gallery;

import android.content.Context;
import android.util.AttributeSet;
import android.view.KeyEvent;
import android.view.MotionEvent;
import android.widget.Gallery;
import cz.muni.fi.android.assistivecamera.texttospeech.SpeechHandler;
 
public class CustomGallery extends Gallery {
	
    public CustomGallery(Context ctx, AttributeSet attrSet) {
        super(ctx, attrSet);
    }
    
    private boolean isScrollingLeft(MotionEvent e1, MotionEvent e2){
        return e2.getX() > e1.getX();
    }

    @Override
    public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY){
        int keyEventCode;
        if (isScrollingLeft(e1, e2)) { 
        	//Check if scrolling left
        	keyEventCode = KeyEvent.KEYCODE_DPAD_LEFT;
            SpeechHandler.getInstance().ttsStop();
        } else { 
        	//Otherwise scrolling right
        	keyEventCode = KeyEvent.KEYCODE_DPAD_RIGHT;
            SpeechHandler.getInstance().ttsStop();
        }
        onKeyDown(keyEventCode, new KeyEvent(0, 0));
        return true;  
    }
}